The Central District of Borujen County () is in Chaharmahal and Bakhtiari province, Iran. Its capital is the city of Borujen.
The village of Naqneh was converted to a city in 2007.
At the time of the 2006 National Census, the district's population was 77,884 in 19,489 households. The following census in 2011 counted 82,225 people in 22,708 households. The 2016 census measured the population of the district as 86,915 inhabitants living in 25,722 households.